Actually the question is, the implementation of GetObjectData is there, but it gives a warning. I suppose that the format of the GetObjectData declaration does not match, but I took the format from MSDN.

Class Code:

[Serializable] public ref struct EmuDevException : public Exception, ISerializable { private: int __line; String ^ __msg; GameData::EmuDevError __id; System::Exception ^ __ex; protected: EmuDevException::EmuDevException( SerializationInfo ^info, StreamingContext ^context) { if (info == nullptr) return; this->Id = (GameData::EmuDevError)(info->GetByte(L"Id")); this->Line = info->GetInt32(L"Line"); this->Msg = info->GetString(L"Msg"); } public: property String ^ Msg { String ^ get() { return __msg; } void set(String ^v) { __msg = v; } }; property GameData::EmuDevError Id { GameData::EmuDevError get() { return __id; } void set(GameData::EmuDevError v) { __id = v; } }; property int Line { int get() { return __line; } void set(int v) { __line = v; } }; property System::Exception ^ InnerExcept { System::Exception ^ get() { return __ex; } }; [System::Security::Permissions::SecurityPermission( System::Security::Permissions::SecurityAction::LinkDemand, Flags = System::Security::Permissions::SecurityPermissionFlag::SerializationFormatter, Unrestricted = false )] void GetObjectData( SerializationInfo ^info, StreamingContext ^context) { if (info == nullptr) return; info->AddValue(L"Id", __id); info->AddValue(L"Line", __line); info->AddValue(L"Msg", __msg); } EmuDevException::EmuDevException(GameData::EmuDevError _id) : __id(_id), __line(-1), __msg(String::Empty), __ex(nullptr) {} EmuDevException::EmuDevException(GameData::EmuDevError _id, int _line) : __id(_id), __line(_line), __msg(String::Empty), __ex(nullptr) {} EmuDevException::EmuDevException(GameData::EmuDevError _id, int _line, String ^_msg) : __id(_id), __line(_line), __msg(_msg), __ex(nullptr) {} EmuDevException::EmuDevException(GameData::EmuDevError _id, int _line, System::Exception ^_ex) : __id(_id), __line(_line), __msg(String::Empty), __ex(_ex) {} };

Full error output:

MSBUILD: warning CA2240: Microsoft.Usage: Add the GetObjectData implementation to the 'EmuDevException' type.

  • docs.microsoft.com/en-us/visualstudio/code-quality/ ... Not enough virtual or override in the definition of GetObjectData? - MSDN.WhiteKnight
  • Similarly, thank you, did not pay attention to it. I thought it was for the base class from which it is inherited. Please issue as an answer. Worker version void virtual GetObjectData(SerializationInfo^ info, StreamingContext context) override - NewView

1 answer 1

The message of the CA2240 code analyzer in this case is due to the fact that the GetObjectData method is not marked as redefinable (virtual). Since the base Exception class contains its own GetObjectData implementation, you must also add override. Correct announcement:

 void virtual GetObjectData(SerializationInfo^ info, StreamingContext^ context) override